Rivet ejector and gun



Feb. 25, 1947. I L. FRANK RIVET EJECTOR AND GUN Filed Sept. 13, 1943 '2Sheets-Sheet 1 Feb.'25, 1947. FRANK RIVET EJECTOR AND GUN Filed Sept.1:5, 1943 2 Sheets-Sheet 2 I INVENTOR. v L U/ f /eflA K I Patented Feb.25, 1947 Application September 13, 1943; Serial No. 5.021122 is{ll-aims. (01. 7-8-46) X My invention relates to a tool for ejectingrivets, one at a time from a magazinainser'ting said rivets in their"holes in the workand then driving and setting said rivets andthe'principal object of my invention, is to provide a simple,.1

practical and e ily operated'tool comprising' in combination,azfonventional pneumatic riveting gun 'or hammer and manually operablemeans for feedinga' string of connected rivets forwardly from a 'h'olderor magazine so'as toejectithe forward'one of the'rivets 'irom'saidholder and insert the ejected rivet in its hole, thensever the ejectedand inserted rivet and finally imparting hamner-like'blcws to the headofthe inserted rivet so as to setand rivetasameinthe work; I v

Further objects of myinv'ention are, to pro videi a rivet ejecting anddriving 1:001 01 the character referred to, which will"materia11'y'lessen th tine and labor ordinarily involve'din' "the in rtng andsettingofrlvets and toprovide the too) with a'number of readilymanipulated 'ad jum'ments in order that "the tool "will handle rifetshaving difierent sized heads or shanks o'f d'fierent lengths and also'eject' and insert th'e L a was in holes spaced difierent distancesapart.

A'further object of myinvention is to provide simple and effective meansfor guiding xthe "tool during its operatiomandgauging the positions-theeiector and' hammer in relation tothe p g 'of the rivet holes. v

' 'With' the foregoing andother-objects in view,

my invention consists in certain novel features of construction andarrangement of'parts which will be hereinafter more fu'lly described-andclaimed and illustrated "in the accompanying drawing in which: I

Fig; 1 is a side elevational view 'of'the tool with parts broken awayandinsection.

Fig.2 is a topplan view of my improv'ed rivet ejector and gun.

Fig. 3 is a front end elevational view of'the' tool." i Fig. 4 is;a-detail section tak'en'on the linet-l of'Fig52. r

I Fig. 5 is a horizontal section takenon thedine' A magazine.

2 v w .Fig; is a'perspectivewi'ew of certainicoopere ating-parts' of therivet shearing'mechanism.

Fig; 11 is aiperspective 'view'of a mo'difiedtform of the rivet feedingpawl.

Fig; 12 is anselevational View "of a "carriage release.

Fig. 13 is.a rvertical section taken on the line l3+-|-3'of"Fi'g;i12. I

Referring by numeralsif'to the accompanying drawings; lo'd'esignatesthe-:ma'in body of "the combinedejector :an'dgun, the same having thecustomary handle and air connectionsisee Fig.

-' 1) and at itsforwarcl end, a removable rivetset strings such as R. isremovablypositioned'in -a longitudinal bore 11 0' 'inicarriage I 6;

Magazines such as IZimay "be interchangeable SOaSTtOaccommodatedifierentisizedrivets:

Carriage "lfiiis connected b'y straps to body l0. in "a? verticallyadjustable relation by 'means' of slot l8"in.'the strapswith-screwspassing-through said slotsand graduation's regulating such.adjust-.

ment. Screws 22 .havingsright and left hand .threadszand being threadedto body 10' andssec-i tion: I 4, .c as .inzEig; 1 areprovided with awrench "engageable .Illit portion? 23 to iJiaciIitate verticaladjustment between *iao'dy 40 and section M.

The istraps l 1 are fixed: to intermediate section 14 andhaveiatt'heir."freeiendsxlugs 2!) adapted to engagesguide groovesfl :ofcarriage I6.

As in Fig: .5 the :carriage -l6 is 'provide'dwith a groove "'24'serving'as 'a guide for ai'sliding strap 25;"the same :having fan"intu'rned lug 26 1 adapted to'zengage :an eXDflIlSlOIl-E'Slbfillg Titwhich engages a flxediportion' of *the :carriage'. I 6. Strap 25 alsoholder :and said "pawl 1 .28 urged forward by-ta spring; 29 mounted: inamusing 3ll 'icarried by strap 25. 9

The rear end. of strap has an 2 outwardly turnedJlug'3-I, (seeEig: .1)adaptedto be engaged by the upperiend'of a'ilever '32, the lower .end ofthelatter being pivotedeon the side of body I 19.

'A'shortilink 33zlpivotally connects the upper sends of lever '32 and:trigger 31'; JTiigger '34 comprises a lowerfifinger piece 135.li'ey'edto pin 36. and an upper-portion 3],keyed'toathe same pin-236:

. Theciorward end-:01 carriage l6 has 2 an'rintee in block 38 and areheld against turning by set screws 45.

Pins 46 extend through the bolts 43 and 44 into the spiral slots .1 ofcams 48 and 49 rotativelv mounted upon; bolts 4 3 and 44. The block 38is provided with a guide" groove 50to receiveas seen in Figs. 7 and 5, apair of shear strips 51,

having cutting edges 52, guide flanges 53 and inturned lugs 54 adaptedto engage flanges 55 of the cams 48 and 49. v

The earns 48 and 49 are provided pivotally connect to links 51, which inturn'are pivoted to arms 58 which arerotatively-journalled on top ofcarriage l6 (see Fig. 2 The arm's 58 are provided with arcuate anvils 59adapted to be engaged by pusher'arms 60 actuated by trigger 34 throughthe medium of links 6| the-ends of the latter being pivotally. connectedto the intermediate portions of said links 69 and trigger 31 (see Figs.1 and 2). V. I

As shown in Fig. 1', I have provided means-for locating the rivet set llof the gun body l9. relative to the rivets previously inserted by theuse of a flanged roller 63 normally urged forward by spring 64, carriedinhousing 65 on gun body.

I9 and limited bvnuts' 66 .on bolt 82.

A :further guide provided to help locatet e device in relation to therivet heads and holes, is adapted to engage the free edge of the metalplate P. This guide comprises a bracket 6! adjustably secured, as at 68to the section l4, and having a housing 69, to receive a slide bolt 10normally urged forward by spring H, and limitedby nuts 12 (see Fig. 4).:4

The slide bolt at its outer end is provided with afoot portion having acentrally .locatedbore to receive a spring 13 and a ball 14 adapted tobe pressed forward by the springsai'd ball being heldin place by peeningV The 'foot'portion of slide bolt 19 has a flange I .15 (see Fig. 2) toguide thegun relative to the edge of the metal P. In the use of .my combned rivet gun and ejector, the rivet magazine I2, is provided with arivet string Rand inserted into rivets of the string in the rivet holeand with the blades 5| about to sever said'rivet. 1 The firstmovementof. trigger 35, moves strap 25 forwardly, independentof'carriage l5. and as this initial movement takes place, pawl 28 feedsthe rivetstring forwardly the distance of one rivet andpawl 16 engagingbehind the head of H the rivet engaged by pawl 28,'holds the rivet.

'1 string against rearward movement when the carhole and the tool is nowelevated tobring rivet set llinto position to-h'ammer said rivetci-Rivet set ll projects forwardly from the too a, distanceapproximatelyequal to the forward "by stop'screwiilil carried bycarriage I6.

. 4 H travel of carriage l6 and thus it is necessary to first move therivet forward out of the carriage before the latteris moved forward toinsert the rivet in its hole.

As shown in Fig. 5 actuationof the trigger 34 when pulled will pushforward with the strap 25 and carriage l6, causing the pawl to engageone of the rivets and move the string of rivets forward, whereby theforemost rivet is guided into the rivet holes ofthe metal. plates, andthe.

rivets being prevented'from retracting by pawl 16. Pawl 1B is pressedforward by spring 1'! carried by housing 18 of adjustable strap 1930fthe The forward motion of strap 25 is limited The next step in theoperation is to' shear off the rivet now positioned in the rivet holesof the metal plates. T01 this end; the trigger 34 is further actuatedcausing pusher arms 69 to engage anvils 59,-androck the arms'58'which inturn, actuate links 51. 7

The links 5?, being pivotally connected to cams 48 and 49, will causethe same to rock uponthe bolts 43 and 44, and through the action of thepins 46 in spiral slots 41 of the earns, the shear strips will moveinward to cut off the rivet poe sitioned in the holes, from the rivetstring-Rh The carriage [8 will then be retracted by spring 82 (see' Fig.2), said spri g ein connected? one of the links section I 4. a

The gun is next raised to apoint where the rivet set II engages the headof the rivet cut off and the gun is then used in the conventional mannerto head the rivet. As shown in Figs-g1 adjustment of; screws'22,.permits the poiitioning of the ejector and therivet set and guide wh ls63, the same distance apart asv the center-of th rivet holesin-themetal. plates.

Figs. 12 and 13 show means to prevent the arriag'e 'lemoving forwarduntil the trigger'wis actuated. Upon actuation of trigger 34 a p t 85,adjustably carried by part3! (see Fig.1) vill force down a T shaped pin86 retracting ti upper end of same from a bore in the carriag l6to-release the said carriage; A- spring; 8\ normally holds the pin 86inlocked positionun As seen in Fig. l1,-.I- provide a modified -form offeed pawl 28, comprising avflat piece of :spring metal carried by a rod30f connected to strap "2 5:. I In' some instances'it maybe founddesirable to eliminateintermediate memberor rail 14, and

mount carriage I6 directly on body I9, in which event rivet setssuch asll but with a greater degree of offset would be used. 1; 1

In Fig. 5 at the left hand end-of the rivetist ng I have shown the rearrivet of the string in the magazine provided. with an axial recess-,Bjfor the reception of a pin R 'on the forward end of the forward rivet ofanother string, thus pro-.

viding for:;a conti-nuous feed of rivets in string 3 This same arg formto pass through the tool. rangement is shown and describedinmy copendingapplication of patent on Rivet strings filed Feb. 22, 1943-, Sen-No.476,742. a 7

Thus it will be seen that I have ,provideda rivet ejector and gun whichis simple in structure, inexpensive of manufactureand very ;ef+

the functions for which; it

51 and to strip 83 fixed .to the '7 and described without departing fromthe spirit feeding the string of rivets forwardly through said magazine.

2. The combination as set forth in claim 1 and with means for severingthe forward one of the rivets from said string.

3. The combination as set forth in claim 1 and with means for guidingthe travel of the tool on the work.

4. The combination as set forth in claim 1 and with adjustable means forgauging the movements of the tool with respect to the rivet hole spacingin the work.

5. The combination as set forth in claim 1 with a grooved rolleryieldingly mounted on the forward end of said hammer and a rivet setdetachably mounted on the forward end of said hammer.

6. The combination as set forth in claim 1 and with adjustable rivethole engaging means mounted on the forward portion of said rail.

7. The combination as set forth in claim 1 and I with means mounted onthe forward end of said carriage and actuated by said manually operablemeans for severing the forward one of the rivets after the string hasbeen fed forwardly the distance of one rivet through said magazine.

8. The combination as set forthin claim 1 and with means fixed on saidrail and having sliding engagement with said carriage for securing saidrail to said hammer in differently adjusted positions.

9. The combination with a pneumatic riveting hammer, and its manuallyoperable controlling means, of a rail mounted for vertical adjustment ontop of said hammer, a carriage mounted for longitudinal slidingmovement'on said rail, a rivet string magazine removably positioned insaid carriage, rivet severing means mounted for operation at the forwardend of said carriage and manually operable means for feeding a rivetstring forwardly through said magazine, then shifting .said carriageforwardly and then actuating said rivet severing means.

10. The combination as set forth in claim 9 and with means carried bysaid hammer for guiding the travel thereof on the work.

11. The combination as set forth in claim .9 and with adjustable meansmounted on the forward portion of said rail for gauging the movements ofi of rivets forwardly from said magazine and for severing the forwardone of the rivets from said string,

13. The combination as set forth in claim 12 with means for actuatingsaid rivet severing means and means for imparting rotary pressure tosaid riveting severing means.

LOUIS FRANK.

REFERENCES CITED The following references are of record in the file ofthis patent: 1

UNITED STATES PATENTS Number Name Date 2,330,052 Henry et a1. Sept. 21,1943 2,335,670 Harvey Nov. 30, 1943 739,811 Baldinweg Sept. 29, 19031,352,851

Trumbull Sept. 10, 1920

